Wrench.



W. O. EILERT.

WRENCH.

APPLICATION FILED m1. 11,1915.

1 1 4 1,786 Patented June 1, 1915.

6 a WO-Ez'left THE NORRIS PETERS 60., PHOTD-LITHO.. WASHING TON, D CvFNETED TATE PATENT-if @FFEQE.

WALTER 0. EILEBT, 0F VALLEY CENTER, KANSAS.

WRENCH.

lhis invention relates to new and useful improvements in wrenches andhas for its principal object to provide a wrench which is particularlyadapted for use in gripping pipes or similar cylindrical objects.

Another object of the'invention is to provide a wrench which willautomatically grip and release the object upon'oscillation of thehandle.

A further object of the invention is to provide a wrench having aminimum number of parts thus avoiding danger of breakage and alsosimplifyin the construction thereof.

A still further object of the invention is to provide a means foradjusting the jaws of the wrench to pipes or other articles of varioussizes.

"With these and other object in view the invention consists in the novelcombination and arrangement of parts which will be fully set forth inthe following specification and accompanying drawing, in which Figure 1is a face view of a wrench constructed in accordance with thisinvention, Fig. 2 is a longitudinal sectional view showing portions ofthe jaws broken away to more clearly illustrate the details ofconstruction, Fig. 3 is a transverse sectional view taken on the line3.3 of Fig. 1, and Fig. 4 is a transverse sectional view taken on theline FA- of Fig. 2.

Referring now to the drawing, by characters of reference, the numeral 1designates as an entirety the handle of the wrench comprising the body 2having secured thereto the plates 3. These plates may be knurled V orotherwise roughened if so desired and eX- tend beyond the end of thebody in parallel relation as at 4. The knurled portion of the plates 3is arranged to form a gripping element which is preferably reduced insize, as clearly shown in the drawing, in order that the user maygrabthe device firmly. Formed in each of the plates 3 are the arcuateslots 5' which if they were connected Patented June 1, 1915.

Application filed. January 11, 1915. Serial No. 1,626.

at their ends would form an oval opening. lhese arcuate slots are toform guides for the jaw pins to cause the jaws to open and close whenthe device is in operation.

The jaws of the wrench comprise the two jaw members 6 and 7,respectively, each comprising the body 8 having formed thereon thearcuate extension 9, the inner face of which is provided with aplurality of transverse ribs 10 to form a gripping portion for pipes andthe like. Adjacently formed with relation to the portion 10 are the slotfaces 11 which extend from the outer terminal of the arcuate faces tothe end of the jaw. Suitable tapered extensions 12 are formed on thebodies 8 at the ends opposite the arcuate extensions 9 and these taperedextensions are provided adjacent their free terminals with suitablerecesses 13, the use of which will appear hereinafter. lhe body 8 of thejaw member 6 is reset as at 14 to receive the tongues 15 which arescrewed or otherwise secured as at 16 to the body 8 of the jaw member7.- These recessed portions 1% and the tongues 15 are designed to formguides to hold the jaw members 6 and 7 in proper position and it willthus be seen that the jaw members will be slidable with relation to eachother, yet held in direct alinement. Each of the bodies 8 is providedwith a'suitable aperture 17 through which the pin 18 extends. lhese pins18 extend beyond the faces of the jaw members and into the arcuate slots5 to form a means whereby the jaws are held in place in the handle.

Pivotally secured as at 19 in each of the recesses 13 is a suitablethreaded stem 20 and the threads on the opposite stems are respectivelyleft and right and are arranged to receive the turn buckle 21 in orderthat the distance between the jaws may be adjusted.

lVhile the arcuate slots 5 are designed to open and close the jaws uponoscillation of the handle with relation thereto, I also provide asuitable ii-shaped leaf spring designated generally by the numeral 22 toassist in opening the jaws and this spring comprises the arms 23 andbite portion 24 which is bent to cause the arms to diverge toward theirfree terminal. The end 25 of one of the arms is arranged to extend intoa suitable notch26 formed in one of the bodies 8 which is designed toretain the spring in place to prevent its accidental removal.

It will be apparent from the foregoing that in use, the jaws are firstadjusted by the adjusting of the turn buckle 21 on the threaded stems 20and the Wrench is then seated on the article which is to be turned.

Upon oscillating the handle with relation to the jaws it will beapparent that the jaws will close and firmly grip the article thusopposite direction, thus causing the article to begripped and enablingthe user to turn the same oppositely. p

; While in the foregoing there is shown and described the preferredembodiment of this invention, it is to be understood that such changesin combination and arrangementof parts may be made as may fall w thlnthe 1 scope of the claims.

What'is claimed is: V 1." A wrench of thecharacter describe including ahandle having parallel extensions,'said parallel extensions being'provided with arcuate slots near one end,

members, pins extending through the jaw members and into the arcuateslots to hold the jaw members in place, guides carried by one of the jawmembers and aw faces formed at the ends of the jaw members, the

arcuate slots being so shaped as to cause'the j aw'members to-close uponmovement ofthe handle in relation thereto;

2. A. wrench of the character described in- 1 eluding a handle, parallelextensions formed on the handle, said parallel extensions being providedwith arcuate slots, said slots being so positioned that if they -Werejoined they would form an ovalextendingtransverselv,

of the handle, jaw members between the par .allel extensions in thehandle, pins extending through the'jaw members and into the arcuateslots to engage thewal-lsfthereof and fv cause the jaw membersto close,guides carried by one of the aw members to hold the two jaw members indirect alinement,1neans ends of the jaw members apart. r V

V In testimony whereof W. 0-,EILERT affixes his signature in presenceoft'wo witnesses.

WALTER EILERTQ Witnesses: I a

' H. EyHAM PSON,

L. E. BAITRD.

Copies .of this patent may be obtained for five cents each, byaddressing the flomniissioner of Iatents, i WashingtomILG. r r r, Y X

